Rajendra Pachauri on Hopenhagen

Rajendra Pachauri, chair of the Intergovernmental Panel on Climate Change, sent this video message because he was was unable to attend tomorrow's Climate One discussion of the Hopenhagen campaign. Greenhouse gas emissions, he says citing the IPCC Fourth Assessment Report, need to peak by 2015 in order to stabilize the atmosphere and keep warming below 2.4 C degrees.